서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)

김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1

In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.

상악 제2유구치와 상악 제1대구치의 치관 형태: 치아계측학적 연구

김지인,현홍근,김영재,김정욱,장기택,이상훈,한세현,김종철 大韓小兒齒科學會 2011 大韓小兒齒科學會誌 Vol.38 No.4

The basic structure of the primary crowns usually resemble their succeeding permanent teeth. However, maxillary second primary molars resemble ipsilateral first permanent molars. Accordingly in this study, odontometric data of the two teeth was obtained, then analyzed to verify the morphological relationship and sex difference between the two teeth. Dental study casts were examined for their mesiodistal and buccolingual width of the crowns, diameter of each cusps, and intercuspal distances. Photographs of the crowns were taken to measure the angles between each cusp tip. The results are as follows : 1. In boys, PrI, PaI, DBC angle, and MBC angle did not show any statistically significant difference between the two teeth(p>0.05), and moderate level of correlations were observed. 2. In girls, crown index, DBC angle, and MBC angle of the two teeth did not show any statistically significant difference(p>0.05), and moderate level of correlations were recognized. 3. Measurements that did not show statistically significant difference between the two teeth in both boys and girls were DBC angle and MBC angle(p>0.05). In DLC angle, however, statistically significant difference was observed(p<0.01). 4. Most of the measurements showed sex differences, except DBC angle, which did not show any sex difference in both teeth(p>0.05). 유치 치관의 기본적인 구조는 대개 계승 영구치를 닮는다. 그러나 제2유구치는 계승 영구치인 제2소구치보다 오히려 제1대 구치와 더 유사한 경향이 있다. 이에 본 연구는 한국인에서 상악 제2유구치와 제1대구치의 치아계측학적 자료(odontometric data)를 얻어 두 치아의 형태와 크기 사이의 연관성을 살펴보고, 나아가 남녀간의 차이점 유무를 고찰해 보고자 하였다. 남아 150명, 여아 150명 총 300명의 모형을 이용하여 상악 제2유구치와 상악 제1대구치의 근원심 치관 폭경, 협설측 치관 폭경, 각 교두의 직경, 교두정간 거리를 계측하였고, 치관의 교합면 사진을 촬영하여 각 교두정 사이의 각도를 측정하여 다음과 같은 결과를 얻었다. 1. 남아에서 Protocone index, Paraconeindex, Distobuccal cusp(DBC)각, Mesiobuccal cusp(MBC)각은 상악 제1대 구치와 제2유구치 사이에 통계적 유의차가 관찰되지 않았고(p>0.05), 중등도의 상관관계가 확인되었다. 2. 여아에서 crown index, Distobuccal cusp(DBC)각, Mesiobuccal cusp(MBC)각은 상악 제1대구치와 제2유구치 사 이에 통계적 유의차가 관찰되지 않았고(p>0.05), 중등도의 상관관계가 확인되었다. 3. 남, 여 모두에서 Distobuccal cusp(DBC)각, Mesiobuccal cusp(MBC)각은 두 치아 사이에 유의할만한 차이를 보이 지 않았고(p>0.05), Distolingual cusp(DLC)각에서는 통계적 유의차가 관찰되었다(p<0.01). 4. 대부분의 계측치에서 남녀 차이를 나타냈지만, Distobuccal cusp (DBC)각은 상악 제1대구치와 제2유구치 모두에서 남녀 차이를 보이지 않았다(p>0.05).

폴리올레핀 자동차 범퍼수지의 화학적 재활용 연구

지성완,홍진후,최재곤 조선대학교 생산기술연구소 1998 生産技術硏究 Vol.20 No.2

Recycling of thermoplastic polyolefins bumper has been carried out by stirring a coarse-crushed plastic material inside a chemical reactor using dichloromethane(MC) to release the paint film and drying the solvent. Chemical method adversely affects the physical properties or surface quality of the final product. It was found that wettability and surface tension of these polymers did not influence coating properties significantly. The diffusion coefficient of MC in PP/EPR blend has been monitored using an attenuated total reflection FT-IR. The test also demonstrated both the accuracy and quickness of FT-IR ATR experiment for measuring the diffusion coefficient of chemical recycling system Crystallinity and fractional free volume were very sensitive to the diffusion rates of small molecules in polymers as well as to the composition in recycled PP/EPR blends. It was suggested that concentration of the PP/EPR resins obtained from recycling process must be lower than 40wt percent in compounding.

Mirtazapine 사용과 연관된 고혈당증 환자 1례

홍영재,박지도,김정기 대한신경정신의학회 2001 신경정신의학 Vol.40 No.1

Mirtazapine은 고전적 우울증 치료제의 부작용과 독성을 감소시키기 위한 시도로 개발된 여러 가지 약제들 중 하나로 α2-noradrenergic 자가수용체와 이종수용체에 대한 길항작용을 함으로써 norep-inephrine과 serotonin의 신경전달을 항진시켜 항우울 효과를 나타내며 흔히 진정, 체중증가, 현기증등의 부작용을 나타내는 것으로 알려져 있다. 저자들은 Mirtazapine 사용과 연관되어 고혈당증이 발생하였다가 약물투여 중지이후 혈당이 정상으로 회복된 1례를 경험하였기에 보고하는 바이다. 향후 고혈당증이나 당뇨병을 일으킬 수 있는 약물을 투여하는 환자에서는 당뇨병에 대한 전반적인 검사 및 약물투여 기간 동안에 혈당에 대한 주의 깊은 추적검사가 시행되어져야 할 것으로 생각한다. Mirtazapine- a newly developed drug with reduce adverse effects and toxicity of original antidepressants- has been known to have antidepressant dffect by enhancing the transmission of norepinephrine and serotonin via blockade of α₂-noradrenergic autoreceptor and heteroreceptor and to have common side effects such as sedation, weight gain, and dizziness. We report a case of 50 years old female depressive patient who developed mirtazapine-associated hyperglycemia during treatment with mirtazapine and returned to normal glucose level after stopping the usage of mirtazapine. In patients who receive drugs with the risk of hypergly cemia and diabetes mellitus, we should consider the evaluation for diabetes mellitus and follow it up carefully in the future.

벼 무논골뿌림裁培時 播種期가 生育 및 收量에 미치는 影響

池在浚,朴裁成,朴成圭,李尙榮,洪性澤,孫錫龍 충북대학교 농업과학기술연구소 1999 農業科學硏究 Vol.16 No.-

This study was carried out to determine the optimum seeding date for the rice(Oryza sativa L.) cultivation of the puddled-soil drill seeding, which is one of the efficient labor saving cultural methods, at the central part of Korea. Namweonbyeo, Anjungbyeo and Ilpumbyeo were seeded on four dates from April 10 to May 25, 1994 with the 15 day interval in the paddy field. In order to examine the adequate seeding date, the growth characters, yield components and yields were investigated. The coleoptile emerged 1 or 2 days earlier in Namweonbyeo than in Anjungbyeo and Ilpumbyeo, and later seeding resulted earlier coleoptile emergence. The number of seedling stands were higher in the order of Namweonbyeo, Anjungbyeo and Ilpumbyeo, was increased at the later seeding and was 81 to 88 seedlings on April 10 seeding. The plant height, number of leaves, number of tillers and dry weight at 50 days after seeding of all three cultivars were higher at later seeding. Leaf area index(LAI) were higher in the order of Ilpumbyeo, Anjungbyeo and Namweonbyeo. LAIs at the heading stage, at 30 days after heading and at 30 days before heading were higher in that order. The dry matter weight at the 30 days before heading was higher in sheath and stem than that in leaf blade, while, at heading stage, it was higher in the order of sheath and stem, leaf blade and panicle. On the other hand, at 30 days after heading, it was higher in the order of panicle, sheath and stem and leaf blade. The number of panicles per m2 was greater in the order of Ilpumbyeo, Anjungbyeo and Namweonbyeo. The ratio of ripened grain was reduced as the later seeding date. Its ratio was higher in Namweonbyeo than in Anjungbyeo and Ilpumbyeo. Yield of Namweonbyeo was lower than those of Anjungbyeo and Ilpumbyeo. Yield was decreased as the seeding date was delayed. Namweonbyeo showed the highest yield at seeding on May 10, while Anjungbyeo and Ilpumbyeo showed at seeding on April 25. The seeding date was negatively correlated with the ratio of ripened grain. while the number of seedling stands was positively correlated with the number of panicle per m2.

벼 무논골뿌림栽培時 播種期 및 立毛數가 生育 및 收量에 미치는 影響

洪性澤,朴栽成,朴成圭,李尙榮,池在浚,孫錫龍 충북대학교 농업과학기술연구소 1999 農業科學硏究 Vol.16 No.-

This study was conducted to establish the cultural techniques of the puddled-soil drill seeding of race (Oryza sativa L.), which is one of the efficient labor saving cultural methods, in the central part of Korea. Seoanbyeo was seeded at three times from April 10 to May 20 with the 20 day interval in 1994. The number of seedling stands per m2 at each seeding date were 50, 90, 130 and 170. The tillering characteristics, lodging characters, dry matter production, yield components and yield were investigated. The number of days to the maximum tillering stage was reduced at the later seeding date. It was 70, 55 and 25 days in seedings on April 10, April 30 and May 20, respectively. The critical effective tillering stage was also shortened at the delayed seeding. The higher the number of seedling stands was, the higher number of tillers, the shorter duration to the maximum tillering stage and the earlier critical effective tillering stage were resulted. The number of tillers was higher at the earlier seeding date. The number of tillers was increased in the order of 50, 90, 130 and 170 seedling stands per m2. The ratios of effective tillers were 53, 61 and 63% at seeding on April 10, April 30 and May 20, respectively. The ratios were not significantly different at April 10. But the ratios in seeding on April 30 and May 20 were reduced as the number of seedling stands was increased. The weight of stem base related to lodging was the highest with 2.01g/10 plants in the optimum seeding on April 30, while it was 1.59g/10 plants in the late seeding on May 20. It was also decreased as the number of seedling stands was increased. The dry weights at 30 days before the heading stage were increased at the later seeding, while the dry weight at the heading stage was the highest at seeding on April 30 which is considered as the adequate seeding time. The dry weights at 30 days before the heading stage were increased as the number of seedling stands was increased and they were increased up to 130 seedling stands per m2 at the heading stage. The length of panicle exsertion was shortened at the later seeding. The length of panicle exsertion was increased up to 130 seedling stands. but it was shorter at 170 seedling stands. The heading dates were later at seeding on April 30 and May 20 than at seeding on April 10. They were not remarkedly different among seeding dates at 50 seedling stands, it was earlier at the higher number of seedling stands over 90. The number of spikelets per panicle was decreased at the higher number of seedling stands. The ratio of ripened grains was higher at earlier seeding than at later seeding. It was not significantly different among the number of seedling stands at the same seeding time. Yields at seeding on April 30, April 10 and May 20 were 644, 624 and 551kg/10a, respectively. The seeding on April 30, the optimum seeding time, resulted the highest yield. Rice quality was decreased due to the increase of the green kerneled rice as the seeding date was delayed.

家畜排泄物 콤포스트化 有效利用에 關한 硏究

洪志亨,全炯柱,朴又龍,崔秉旻,金在煐 順天大學校 1983 論文集 Vol.2 No.1

家畜排泄物의 堆肥化 작업체계의 工學的인 局面은 畜産經營의 畜産物 生産性, 에너지保存, 公害防力및 勞動力 節約에 密接한 關係를 갖고 있는 바이다. 그러나 韓國에 있어서 現在 畜産業의 飼養規模와 飼育頭數는 每年 增加하는 傾向을 나타내고 있으나, 傳統的인 家畜排泄物의 堆肥化處理 加工作業上의 問題點에 關한 硏究資料는 거의 없는 實情으로 堆肥化 작업체계 改善確立이 切實히 要求되고 있다. 따라서, 本硏究의 目的은 家畜排泄物 堆肥化 작업체계상의 工學的인 諸問題點을 調査分析하고 이에 對한 現況을 評價하여 改善方案을 模索하기 위한 基本資料를 提供하기 위해 遂行되었으며 調査分析 結果를 要約하면 다음과 같다. 1. 畜産農家의 家畜排泄物 處分方法으로는 大部分이 自然乾燥, 堆積, 嫌氣的 固形堆肥化에 依하여 遂行되고 있어 家畜糞尿에 의한 公害가 深刻해 지고 있었다. 2. 野積堆肥化 가공작업체계에 있어서는 트랙터에 附着된 前後作動式 로우더가 바람직하다. 3. 好氣性 野積堆肥化 加工作業에 따른 良質의 腐熟堆肥를 얻기 위해서는 外部氣溫에 따라 適正通氣量을 維持하기 위해 3∼7日 間隔으로 混合攪拌해야 되며 氣象條件에 의한 影響을 防止하기 위하여 堆肥作業物質의 表面을 비닐 等으로 덮거나, 더운날에는 加水를 해야할 것이 要望된다. 4. 堆肥化 加工作業體系의 基本段階別로 이루어지는 畜産農家는 거의 찾아 볼 수가 없었다. 5. 堆肥化加工 過程은 畜産農家周圍의 콤포스트센타에서 全體農家가 地力增進과 公害防止를 위해 參與할 수 있는 總合的이고 協同的인 加工作業體系로서 一貫性있게 遂行되어야 할 것으로 思料된다. There was almost no livestock farms to follow the basic stage in composting operation system. Composting disposal process should be performed successively an integrate cooperative operation system at compost center which is participated in all farmers near the livestock farms for the purpose of land improvement and pollution abatement. Well matured compost which is resulted from aerobic windrow solid composting should be turned at 3 to 7 days to insure abequate aeration according to the ambient temperature. The compost material should be covered with vinyl sheets etc. to avoid the effect of climatic condition.

차세대 이동 위성서비스의 특성 분석

홍정식,안재경,김지표 한국정보사회진흥원 2005 정보화정책 Vol.12 No.4

1990대에 본격적으로 시작된 위성에 대한 연구를 바탕으로 국내에서는 무궁화 위성이 3호까지 성공적으로 운용되고 있으며, 곧 무궁화위성 5호도 발사될 예정에 있다. 현재 이러한 위성들은 통신, 방송용으로 지상망을 보완하는 역할을 수행하고 있으나, 차후 위성은 언제 어디서나 개인이 원하는 형태로 이용할 수 있는 초고속 멀티미디어 서비스를 제공할 예정이다. 본 연구에서는 미래 이동위성통신시스템의 원활한 개발을 위하여 필수적으로 수반되어야 하는 차세대 유망 위성서비스에 대한 다양한 분류작업과 지상망 대비 경쟁력 검토를 하였으며, 이를 바탕으로 양방향 HDTV, 양방향 DMB, LBS와POS, PPDR, DCD, Glass Vision, 실시간 여행/운전 안내, 자동 정보 업데이트, 산간/오지의 인터넷 등 9개의 유망 위성서비스를 도출하고 그 특성을 분석하였다. 또한 이들 서비스를 심층 분석한 결과 재난정보 서비스, 디지털 콘텐츠 분배서비스, 그리고 산간/오지 인터넷 서비스가 보다 경쟁력 있는 서비스로 드러났다.

적정약물요법을 위한 약동학/약력학적 개념

손지홍,신재국 大韓臨床藥理學會 2000 臨床藥理學會誌 Vol.8 No.1

성장기 아동의 single tooth scissors bite의 교정 치료: 증례 보고

김지인,현홍근,김영재,김정욱,장기택,이상훈,한세현,김종철 大韓小兒齒科學會 2011 大韓小兒齒科學會誌 Vol.38 No.4

A scissors bite in the posterior teeth occurs when the upper teeth are positioned totally buccal to the lower teeth in centric occlusion, either unilaterally or bilaterally. This malocclusion can result from either excessive width of the maxilla or deficient width of the mandible, or sometimes combination of the both. Scissors bite, when left untreated without a proper dental intervention, interferes with the normal mandibular growth leading to a state where consequent disharmony in dental arch width evokes occlusal disturbances. Therefore, early preventive orthodontic treatment is necessary in patients with scissors bite. Scissors bite rarely involves anterior and posterior sites concuttently across the dental arch but usually affect single tooth. Even in the single tooth scissors bite cases, more likely to be met in the clinical fields, immediate dental intervention is indicated because continuous occlusal forces that exacerbate the already adverse axis of the posterior teeth. In this case study, patients with single tooth scissors bite, each 7, 14, 12, and 16 years old, were each treated with criss-cross elastic, fixed appliance, removable appliance, and miniscrews. With the proper selection of appliances appropriate to each specific cases, good treatment outcome can be achieved without resulting any side effects. 중심교합위의 상태에서 편측 혹은 양측으로 상악 구치부의 치아가 하악 구치부의 협측으로 위치한 경우를 scissors bite라 고 한다. 이는 상악의 폭경이 크거나 하악의 폭경이 좁은 경우 발생한다. Scissors bite의 경우 방치하게 되면 하악의 성장이 방해받게 되고 그 결과, 악궁 폭경의 부조화가 심해져 저작 장애를 일으킬 수 있으므로 조기 차단 교정이 반드시 필요하다. 실제 임상에서는 여러 치아의 scissors bite보다 최후방 구치 혹은 그 외 하나의 구치만의 single tooth scissors bite(STSB)을 보이는 경우가 많다. 이러한 STSB의 경우도 방치하게 되면 저작력으로 인하여 구치의 각도가 더욱 악화되므로 즉각적인 치료가 필요하다. 본 증례에서는 STSB를 보이는 7세, 14세, 12세, 16세의 환자에게 각각 criss-cross elastic, 고정성 장치, 가철성 장치, miniscrew를 사용하여 치료한 증례를 보고하였다. 각 환자의 증례에 적합한 장치를 잘 선택하여 사용한다면 치아를 정출시키는 등의 부작용을 야기하지 않고 양호한 결과를 얻을 수 있을 것이다